Throttle



Jan. 17, 1933. c. RINGEL ET AL 1,894,789

THROTTLE 5 Sheets-Sheet 1 Filed June 6, 1931 INVENTOR BY Q ATTORNEY Jan.17, 1933. QRINGEL ET AL 1,894,789

THROTTLE Filed June 6, 1951 5 Sheets-Sheet 2 INVENTOR ATTORN EY Jan. 17,1933. c. RINGEL ET AL THROTTLE Filed June 6, 1931 5 Sheets-Sheet 3 Jan.17, 1933. c. RINGEL. ET AL THROTTLE Filed June 6, 1931 5 Sheets-Sheet 4INVENTORS BY Q/ZQQ ATTORNEY Patented Jan. 17, 1933 N ures PATENT OFFICE.

CHARLES RINGEL, OF NORTH HAWTHORNE, NEW- JERSEY, AND WILLIAM K. CARTER,

OE BROOKLYN, NEW YORK, ASSIGNORS TO AMERICAN THRQTTLE COMPANY,

OF NEW YORK, N. Y.

THROTTLE Application filedJune 6; 1931. Serial No. 542,574.

This invention relates to high pressure double pressure locomotivesthatis, locomotives of the type having a boiler section for generatingsteam at relatively very high pressure to be used in a high pressurecylinder or turbine, anda boiler section for generating steam of lowerpressure for use, either by itself or mingled with the exhaust from thehigh pressure engine, in; a low pressure cylinder or cylinders; andrelates more specifically to throttles for controlling the steam flow tothe engines.

In accordance with an increasingly common practice the. throttles inlocomotives equipped with the usual fire-tube-su-perheaters are placedin suitably shaped chambers cast integrally with the superhea'terheaderhousing, and in our invention we followthis practice. It is the objectof the invention to provide an arrangement whereby such a combinedsuperheater-throttle housing can conveniently be used in such highpressuredouble'pressure locomotives.

The invention is illustrated in the drawings accompanying thepresentspecification. In these drawings,-Fig-. 1 shows a fragmentaryfront view of a loco'motiveequipped with our invention, portionsbeing'sectioned and others being omitted; Fig. 2 is a centrallongitudinal section of the smoke-box end of the locomotive shown inFig. 1; Fig. 3 is an enlarged top View with portions shown in sectionofthe combined header and throttles lines 4-4 and 5-5 of Fig. 8; Figs. 6,to 14 are figures to aid in explaining the sequence in which thethrottles operate.

As briefly mentioned above, this invention relates to highpressure-double pressure locomotives. A locomotive of this type is shownin U. S; Patent 1,663,910, granted onMarch 27, 1928 to O. H. Hartman. Inthe form shown in this patent, the high pressure steam which may be ofthe order of 900 or 1000 pounds per square inch is indirectly generated.The particular locomotive in connec. tion with which I illustrate myinvention is of this type but as will be clear from what is said in thefollowing specification, this is not at all essential. The high pressuresteam might, if preferred, be just like the low pressure steam, or itmight be generated indirectly in some other manner.

Referring now to the drawings, the high pressure steam, no matter howgenerated, is delivered to nozzle 1 of the header 2. The low pressuresteam is delivered to the header through the nozzle 3. The headervitself fol chamber 9 by the partition 10 so that the high pressure andlow pressure steams do not mingle. The high pressure steam flows fromthe subsidiary headers or fingers 5 through the connections 11 11 to theshort transverse chamber 12. Its flow from this short transverse chamber12 to the single high pressure steam pipe 13 is controlled bya pluralityof throttles 14. The low pressure steam after it has been superheatedand delivered to the subsidiary headers or fingers -55 flows by means ofthe connections 15-15 to the short transverse chamber 16. From here itflows to the two connections 1717 to the steam pipes 1818, its flowbeing controlled by means of the plurality of valves or throttles 1919.

The particular locomotive shown in the illustration has one central highpressure engine at 20 and two low pressure engines arranged at the twosides of the frames at 2121. The high pressure steam flowing throughsteam pipe 13 is delivered to the high pressure engine at 20 and afterit has done work expansivelyin the high pressure engine is conveyed awaythrough the twoeX- haust pipes 22-22. These pipes 22-22 de liver theexhaust, which is slightly above the pressure of the steam in the steampipes 18?18, to the mixing devices 23.23 where generated directly 50 thethe two steams mingle and flow on together through the pipes 18-18 tothe low pressure engines 21-%1. The exhaust from the two low pressureengines leaves in the usual way through the nozzle 24 and stack 25.

It will be noted that the short transverse chambers 12 and 16 are notalined but lie one forward of the other. In the arrangement shown, thechamber 12 lies nearer to the header 2 although this could in practicebe reversed and the'chamber 16 could be placed adjacent to the header,the chamber 12 being moved forward. Each throttle 14 comprises a diskvalve 26, a piston 27, a connecting stem 28 and a downwardly extendingoperating stem 29. The disk valve 26 controls the port 30 and the pistonreciprocates in the cylindrieal aperture in the wall 31 which dividesthe central chamber 32 from the balancing chamber 33. An upwardlyextending stem 34 reciprocating in the cavity 35 of the cap 36 servesfurther to guide the valve in its motion. To actuate the valves, earns37 mounted in pairs on the shaft 38 are employed. These cams engage theupper surface 39 (see Fig. 8) to raise the valves and the lower surface40 to ull the valves down. The two cams making up a pair lie on oppositesides of the stem 29.

The form and general arrangement of these valves is not novel and formsno part of the present invention except as it enters into thecombination claimed below.

The valve described above is one of the high ressure valves as appearingin Fig. 5. An inspection of Fig. 4 will show that the parts of the lowpressure valves correspond closely to those of the high pressure valves,so that no further description of them is required.

In the form of the invention used herein for illustrative purposes andshown in the drawings, there are three high pressure valves and threelow pressure valves. There might of course be some other number ofvalves used.

In order to furnish the balancing steam for chamber 33, a balancingvalve 41 is emloyed. This valve controls a passage openmg directly intothe chamber 33 according to ordinary construction and shown, for examle, in U. S. Patent No. 1.662.955.

imilarly a balancing valve 42, for the low pressure valves, controls theflow of steam into the balancing chamber 33a, Fig. 4.

When once the balancing valves have been raised and steam admitted tothe common balancin chamber 33 and the common balancin amber 33a, all ofthe valves are substantially balanced so that they can be raised ofl'their seats without any great effort.

Each valve of course has its own pair of cams. Those for the highpressure throttles are mounted on the cam shaft 38 and the cams for thelow pressure valves are mounted on the camshaft 42. The high pressurecam shaft 38 has a bearing 43 at its inner end and a second bearing44 atthe other end. The low pressure cam s aft has a bearing 45 at one endand a second bearing 46 at the opposite end. The two shafts extend outthrough the side of the smoke-box shell (see Fig. 1) and have secured tothem the two arms 47 and 48v The opposiw ends of the arms 47 and 48 areconnected to the rod 49 which extends back to the cam by means of thelink 50.

Figs. 6 to 14 illustrate the order in which the various valves open. Thethree high pressure valves are designated in Fig. 6 y the letters A B Cand the three low pressure valves by the letters a b 0. Correspondingletters designate these valves in Figs. 7 to 14. The two ilot valves aredesignated by the letters P or the high pressure valve and p for the lowpressure respectively. As the rod 49 is pulled back by the engineer, thefirst valve to be opened 1s the low pressure pilot valve 2. The othersopen successively with further motion of the cam shafts and the pilotvalve p continues to open during such further motion so that at the endof the movement it will be raised by the greatest distance. The valvesareillustrated in the position in which the last of the valves to beopened, namely 0, is just about to be raised. It will be noted that thecam is in contact but that this last valve has not been raised from itsinitial position. The small pilot valve fp has been raised farthest. aswill be clear rom an inspection of the figures. The valve to be engagednext after the pilot valve p is the high pressure pilot valve P. Theothers are raised in the following sequence: a, A, b, B, c, O. Theamounts by which they have been raised increase progressively in theorder named.

While it is not essential to our invention that the valve should beraised in this precise order this sequence will be found the mostsatisfactory in practice.

What we claim is:

1. In a high ressure, low pressure loco- I motive, the comblnation of asteam superheater header having a compartment to which superheated highpressure steam is delivered and a second compartment to whichsuperheated low pressure steam from a source independent of the highpressure steam is delivered, a conduit to conduct the high pressuresteam to a high pressure engine, a second conduit to conduct the lowpressure steam to a low pressure engine, a plurality of throttlesgoverning each of the conduits, the throttles governing the highpressure steam being in an alined group transverse to the axis of thelocomotive, the throttles governing the low pressure steam being in asecond alined group transverse to the axis of the locomotive, one groupbeing forward and to one side of the other, two'parallel cam shaftsextending inward from one side of the header to operate the throttlesand means to actuate such shafts in unison.

2. Apparatus in accordance with claim 1, the arrangement being such thatthe Valves governing the high and low pressure steam admission open inalternating order.

3. In a locomotive, a flue sheet separating the steam and Water spacefrom the smokebox, flues extending back from the flue sheet, asuperheater header arranged transversely in the upper part of thesmoke-box, a partition in the header parallel to the axis of thelocomotive, means to supply steam from said i steam space to one side ofthe partition, means to supply higher pressure steam to the other sideof the partition, means, including tubular superheater elementsextending into the flues, to superheat both said steams and deliver themseparately back to the header, steam pipes adapted separately to conveysaid steams from the header, a plurality of throttles controlling theflow of the higher pressure steam, a plurality of throttles controllingthe fiow of the low-pressure steam from the header, the throttles beingalined in two rows one forward and to one side of the other, and tWoparallel cam-shafts extending inward from one side of the header tooperate the throttles.

I CHARLES RINGEL.

WILLIAM K. CARTER.

